
CodePen
CodeSandbox
replit
Pastebin.com
JS Bin
VS Code
GitHub
Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.

Hoxhunt
Knowbe4
Gophish
CyberHoot
Proofpoint
KnowBe4 Phishing Security Test
PhishingBox
Run the deception yourself: internal phishing simulations that train employees at the moment they click, and generate audit evidence for ISO 27001, SOC 2, NIS2, DORA, PCI DSS and HIPAA.

Which is more popular?
Based on our record, JSFiddle seems to be a lot more popular than Fallax. While we know about 204 links to JSFiddle, we've tracked only 1 mention of Fallax.
Website, pricing, platforms and company facts side by side.
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| Website | jsfiddle.net | fallax.io |
| Pricing | — | |
| Company | — | Startup from Belgium · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of JSFiddle yet.
Fallax runs realistic phishing simulations against your own team, delivered straight into Microsoft 365 and Google Workspace mailboxes. When someone clicks, they get a short lesson at that exact moment, not a training course three weeks later. Every send, click and completion lands in an evidence...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of Fallax yet.
Walkthroughs and reviews on video.
Dashboard JSFiddle Online JavaScript Editor jQuery, Angular, Backbone, Underscore, Knockout, Y
More videos
Phishing training on autopilot, that proves it ran - Fallax
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using JSFiddle and Fallax. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Test your javascript, CSS, HTML or coffeescript online with jsfiddle code editor. Jsfiddle – code playground.
JSFiddle cannot be used to host code on your server. The code has to be on JSFiddle and is public all the time.
What is missing from JSFiddle is live previews. You have to basically refresh the page by clicking on the play button. And compared to other playgrounds, JSFiddle is probably the slowest. Another slightly frustrating...
We have no reviews of Fallax yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Https://jsfiddle.net/ used to be also very popular, I see that it is still available, but haven't used it in a while. Which other alternatives do people use now days? - Source: Hacker News / 3 months ago
Coding is like learning a new language—you must practice by writing code, not just reading about it. Use free online editors like CodePen, JSFiddle, or Replit to experiment. - Source: dev.to / over 1 year ago
As you embark on these projects, take your time to familiarize yourself with HTML tags and CSS properties. Use online tools like CodePen or JSFiddle to experiment with your code and visualize your results. - Source: dev.to / over 1 year ago
Working on Fallax (https://fallax.io), phishing simulations for companies. The difference with most tools is we don't send the mails, we inject them directly in the mailbox via the Microsoft 365 or Google Workspace API. So no... - Source: Hacker News / about 1 month ago
When comparing JSFiddle and Fallax, you can also consider the following products.




KnowBe4 provides Security Awareness Training to help you manage the IT security problems of social engineering, spear-phishing & ransomware.
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Code, create, andlearn together. Use our free, collaborative, in-browser IDE to code in 50+ languages — without spending a second on setup.
Compare replit to JSFiddle or Fallax:
Gophish is an open-source phishing toolkit designed for businesses and penetration testers. It provides the ability to quickly and easily setup and execute phishing engagements and security awareness training.
Compare Gophish to JSFiddle or Fallax: